webcit/webcit.c

   1 /*
   2  * $Id$
   3  *
   4  * This is the main transaction loop of the web service.  It maintains a
   5  * persistent session to the Citadel server, handling HTTP WebCit requests as
   6  * they arrive and presenting a user interface.
   7  */
   8 #include <stdarg.h>
   9 #define SHOW_ME_VAPPEND_PRINTF
  10 #include "webcit.h"
  11 #include "groupdav.h"
  12 #include "webserver.h"
  13
  14 #include <stdio.h>
  15 #include <stdarg.h>
  16
  17 /*
  18  * String to unset the cookie.
  19  * Any date "in the past" will work, so I chose my birthday, right down to
  20  * the exact minute.  :)
  21  */
  22 static char *unset = "; expires=28-May-1971 18:10:00 GMT";
  23
  24 HashList *HandlerHash = NULL;
  25
  26 void WebcitAddUrlHandler(const char * UrlString,
  27                          long UrlSLen,
  28                          WebcitHandlerFunc F,
  29                          long Flags)
  30 {
  31         WebcitHandler *NewHandler;
  32
  33         if (HandlerHash == NULL)
  34                 HandlerHash = NewHash(1, NULL);
  35
  36         NewHandler = (WebcitHandler*) malloc(sizeof(WebcitHandler));
  37         NewHandler->F = F;
  38         NewHandler->Flags = Flags;
  39         Put(HandlerHash, UrlString, UrlSLen, NewHandler, NULL);
  40 }
  41
  42 /*
  43  * remove escaped strings from i.e. the url string (like %20 for blanks)
  44  */
  45 long unescape_input(char *buf)
  46 {
  47         int a, b;
  48         char hex[3];
  49         long buflen;
  50         long len;
  51
  52         buflen = strlen(buf);
  53
  54         while ((buflen > 0) && (isspace(buf[buflen - 1]))){
  55                 buf[buflen - 1] = 0;
  56                 buflen --;
  57         }
  58
  59         a = 0;
  60         while (a < buflen) {
  61                 if (buf[a] == '+')
  62                         buf[a] = ' ';
  63                 if (buf[a] == '%') {
  64                         /* don't let % chars through, rather truncate the input. */
  65                         if (a + 2 > buflen) {
  66                                 buf[a] = '\0';
  67                                 buflen = a;
  68                         }
  69                         else {
  70                                 hex[0] = buf[a + 1];
  71                                 hex[1] = buf[a + 2];
  72                                 hex[2] = 0;
  73                                 b = 0;
  74                                 sscanf(hex, "%02x", &b);
  75                                 buf[a] = (char) b;
  76                                 len = buflen - a - 2;
  77                                 if (len > 0)
  78                                         memmove(&buf[a + 1], &buf[a + 3], len);
  79
  80                                 buflen -=2;
  81                         }
  82                 }
  83                 a++;
  84         }
  85         return a;
  86 }
  87
  88 void free_url(void *U)
  89 {
  90         urlcontent *u = (urlcontent*) U;
  91         FreeStrBuf(&u->url_data);
  92         free(u);
  93 }
  94
  95 /*
  96  * Extract variables from the URL.
  97  */
  98 void addurls(StrBuf *url)
  99 {
 100         const char *aptr, *bptr, *eptr, *up;
 101 ///     char *buf;
 102         int len, keylen;
 103         urlcontent *u;
 104         struct wcsession *WCC = WC;
 105
 106         if (WCC->urlstrings == NULL)
 107                 WCC->urlstrings = NewHash(1, NULL);
 108 //      buf = (char*) malloc (ulen + 1);
 109 //      memcpy(buf, url, ulen);
 110 ///     buf[ulen] = '\0';
 111         eptr = ChrPtr(url) + StrLength(url);
 112         up = ChrPtr(url);
 113         while ((up < eptr) && (!IsEmptyStr(up))) {
 114                 aptr = up;
 115                 while ((aptr < eptr) && (*aptr != '\0') && (*aptr != '='))
 116                         aptr++;
 117                 if (*aptr != '=') {
 118                         ///free(buf);
 119                         return;
 120                 }
 121                 ///*aptr = '\0';
 122                 aptr++;
 123                 bptr = aptr;
 124                 while ((bptr < eptr) && (*bptr != '\0')
 125                       && (*bptr != '&') && (*bptr != '?') && (*bptr != ' ')) {
 126                         bptr++;
 127                 }
 128                 //*bptr = '\0';
 129                 keylen = aptr - up - 1; /* -1 -> '=' */
 130                 if(keylen > sizeof(u->url_key)) {
 131                         lprintf(1, "URLkey to long! [%s]", up);
 132                         continue;
 133                 }
 134
 135                 u = (urlcontent *) malloc(sizeof(urlcontent));
 136                 memcpy(u->url_key, up, keylen);
 137                 u->url_key[keylen] = '\0';
 138                 if (keylen < 0) {
 139                         lprintf(1, "URLkey to long! [%s]", up);
 140                         free(u);
 141                         continue;
 142                 }
 143
 144                 Put(WCC->urlstrings, u->url_key, keylen, u, free_url);
 145                 len = bptr - aptr;
 146                 u->url_data = NewStrBufPlain(aptr, len);
 147                 StrBufUnescape(u->url_data, 1);
 148
 149                 up = bptr;
 150                 ++up;
 151 #ifdef DEBUG_URLSTRINGS
 152                 lprintf(9, "%s = [%ld]  %s\n", u->url_key, u->url_data_size, ChrPtr(u->url_data));
 153 #endif
 154         }
 155         //free(buf);
 156 }
 157
 158 /*
 159  * free urlstring memory
 160  */
 161 void free_urls(void)
 162 {
 163         DeleteHash(&WC->urlstrings);
 164 }
 165
 166 /*
 167  * Diagnostic function to display the contents of all variables
 168  */
 169
 170 void dump_vars(void)
 171 {
 172         struct wcsession *WCC = WC;
 173         urlcontent *u;
 174         void *U;
 175         long HKLen;
 176         char *HKey;
 177         HashPos *Cursor;
 178
 179         Cursor = GetNewHashPos ();
 180         while (GetNextHashPos(WCC->urlstrings, Cursor, &HKLen, &HKey, &U)) {
 181                 u = (urlcontent*) U;
 182                 wprintf("%38s = %s\n", u->url_key, ChrPtr(u->url_data));
 183         }
 184 }
 185
 186 /*
 187  * Return the value of a variable supplied to the current web page (from the url or a form)
 188  */
 189
 190 const char *XBstr(char *key, size_t keylen, size_t *len)
 191 {
 192         void *U;
 193
 194         if ((WC->urlstrings != NULL) &&
 195             GetHash(WC->urlstrings, key, keylen, &U)) {
 196                 *len = StrLength(((urlcontent *)U)->url_data);
 197                 return ChrPtr(((urlcontent *)U)->url_data);
 198         }
 199         else {
 200                 *len = 0;
 201                 return ("");
 202         }
 203 }
 204
 205 const char *XBSTR(char *key, size_t *len)
 206 {
 207         void *U;
 208
 209         if ((WC->urlstrings != NULL) &&
 210             GetHash(WC->urlstrings, key, strlen (key), &U)){
 211                 *len = StrLength(((urlcontent *)U)->url_data);
 212                 return ChrPtr(((urlcontent *)U)->url_data);
 213         }
 214         else {
 215                 *len = 0;
 216                 return ("");
 217         }
 218 }
 219
 220
 221 const char *BSTR(char *key)
 222 {
 223         void *U;
 224
 225         if ((WC->urlstrings != NULL) &&
 226             GetHash(WC->urlstrings, key, strlen (key), &U))
 227                 return ChrPtr(((urlcontent *)U)->url_data);
 228         else
 229                 return ("");
 230 }
 231
 232 const char *Bstr(char *key, size_t keylen)
 233 {
 234         void *U;
 235
 236         if ((WC->urlstrings != NULL) &&
 237             GetHash(WC->urlstrings, key, keylen, &U))
 238                 return ChrPtr(((urlcontent *)U)->url_data);
 239         else
 240                 return ("");
 241 }
 242
 243 const StrBuf *SBSTR(const char *key)
 244 {
 245         void *U;
 246
 247         if ((WC->urlstrings != NULL) &&
 248             GetHash(WC->urlstrings, key, strlen (key), &U))
 249                 return ((urlcontent *)U)->url_data;
 250         else
 251                 return NULL;
 252 }
 253
 254 const StrBuf *SBstr(const char *key, size_t keylen)
 255 {
 256         void *U;
 257
 258         if ((WC->urlstrings != NULL) &&
 259             GetHash(WC->urlstrings, key, keylen, &U))
 260                 return ((urlcontent *)U)->url_data;
 261         else
 262                 return NULL;
 263 }
 264
 265 long LBstr(char *key, size_t keylen)
 266 {
 267         void *U;
 268
 269         if ((WC->urlstrings != NULL) &&
 270             GetHash(WC->urlstrings, key, keylen, &U))
 271                 return StrTol(((urlcontent *)U)->url_data);
 272         else
 273                 return (0);
 274 }
 275
 276 long LBSTR(char *key)
 277 {
 278         void *U;
 279
 280         if ((WC->urlstrings != NULL) &&
 281             GetHash(WC->urlstrings, key, strlen(key), &U))
 282                 return StrTol(((urlcontent *)U)->url_data);
 283         else
 284                 return (0);
 285 }
 286
 287 int IBstr(char *key, size_t keylen)
 288 {
 289         void *U;
 290
 291         if ((WC->urlstrings != NULL) &&
 292             GetHash(WC->urlstrings, key, keylen, &U))
 293                 return StrTol(((urlcontent *)U)->url_data);
 294         else
 295                 return (0);
 296 }
 297
 298 int IBSTR(char *key)
 299 {
 300         void *U;
 301
 302         if ((WC->urlstrings != NULL) &&
 303             GetHash(WC->urlstrings, key, strlen(key), &U))
 304                 return StrToi(((urlcontent *)U)->url_data);
 305         else
 306                 return (0);
 307 }
 308
 309 int HaveBstr(char *key, size_t keylen)
 310 {
 311         void *U;
 312
 313         if ((WC->urlstrings != NULL) &&
 314             GetHash(WC->urlstrings, key, keylen, &U))
 315                 return (StrLength(((urlcontent *)U)->url_data) != 0);
 316         else
 317                 return (0);
 318 }
 319
 320 int HAVEBSTR(char *key)
 321 {
 322         void *U;
 323
 324         if ((WC->urlstrings != NULL) &&
 325             GetHash(WC->urlstrings, key, strlen(key), &U))
 326                 return (StrLength(((urlcontent *)U)->url_data) != 0);
 327         else
 328                 return (0);
 329 }
 330
 331
 332 int YesBstr(char *key, size_t keylen)
 333 {
 334         void *U;
 335
 336         if ((WC->urlstrings != NULL) &&
 337             GetHash(WC->urlstrings, key, keylen, &U))
 338                 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
 339         else
 340                 return (0);
 341 }
 342
 343 int YESBSTR(char *key)
 344 {
 345         void *U;
 346
 347         if ((WC->urlstrings != NULL) &&
 348             GetHash(WC->urlstrings, key, strlen(key), &U))
 349                 return strcmp( ChrPtr(((urlcontent *)U)->url_data), "yes") == 0;
 350         else
 351                 return (0);
 352 }
 353
 354 /*
 355  * web-printing funcion. uses our vsnprintf wrapper
 356  */
 357 void wprintf(const char *format,...)
 358 {
 359         struct wcsession *WCC = WC;
 360         va_list arg_ptr;
 361
 362         if (WCC->WBuf == NULL)
 363                 WCC->WBuf = NewStrBuf();
 364
 365         va_start(arg_ptr, format);
 366         StrBufVAppendPrintf(WCC->WBuf, format, arg_ptr);
 367         va_end(arg_ptr);
 368
 369 ///     if (StrLength(WCC-WBuf) > 2048)
 370                 ///client_write(wbuf, strlen(wbuf));
 371 }
 372
 373 /*
 374  * http-header-printing funcion. uses our vsnprintf wrapper
 375  */
 376 void hprintf(const char *format,...)
 377 {
 378         struct wcsession *WCC = WC;
 379         va_list arg_ptr;
 380
 381         va_start(arg_ptr, format);
 382         StrBufVAppendPrintf(WCC->HBuf, format, arg_ptr);
 383         va_end(arg_ptr);
 384
 385 ///     if (StrLength(WCC-WBuf) > 2048)
 386                 ///client_write(wbuf, strlen(wbuf));
 387 }
 388
 389
 390 /*
 391  * wrap up an HTTP session, closes tags, etc.
 392  *
 393  * print_standard_html_footer should be set to:
 394  * 0 to transmit only,
 395  * 1 to append the main menu and closing tags,
 396  * 2 to append the closing tags only.
 397  */
 398 void wDumpContent(int print_standard_html_footer)
 399 {
 400         if (print_standard_html_footer) {
 401                 wprintf("</div>\n");    /* end of "text" div */
 402                 do_template("trailing");
 403         }
 404
 405         /* If we've been saving it all up for one big output burst,
 406          * go ahead and do that now.
 407          */
 408         end_burst();
 409 }
 410
 411
 412 /*
 413  * Copy a string, escaping characters which have meaning in HTML.
 414  *
 415  * target               target buffer
 416  * strbuf               source buffer
 417  * nbsp                 If nonzero, spaces are converted to non-breaking spaces.
 418  * nolinebreaks         if set, linebreaks are removed from the string.
 419  */
 420 long stresc(char *target, long tSize, char *strbuf, int nbsp, int nolinebreaks)
 421 {
 422         char *aptr, *bptr, *eptr;
 423
 424         *target = '\0';
 425         aptr = strbuf;
 426         bptr = target;
 427         eptr = target + tSize - 6; // our biggest unit to put in...
 428
 429         while ((bptr < eptr) && !IsEmptyStr(aptr) ){
 430                 if (*aptr == '<') {
 431                         memcpy(bptr, "&lt;", 4);
 432                         bptr += 4;
 433                 }
 434                 else if (*aptr == '>') {
 435                         memcpy(bptr, "&gt;", 4);
 436                         bptr += 4;
 437                 }
 438                 else if (*aptr == '&') {
 439                         memcpy(bptr, "&amp;", 5);
 440                         bptr += 5;
 441                 }
 442                 else if (*aptr == '\"') {
 443                         memcpy(bptr, "&quot;", 6);
 444                         bptr += 6;
 445                 }
 446                 else if (*aptr == '\'') {
 447                         memcpy(bptr, "&#39;", 5);
 448                         bptr += 5;
 449                 }
 450                 else if (*aptr == LB) {
 451                         *bptr = '<';
 452                         bptr ++;
 453                 }
 454                 else if (*aptr == RB) {
 455                         *bptr = '>';
 456                         bptr ++;
 457                 }
 458                 else if (*aptr == QU) {
 459                         *bptr ='"';
 460                         bptr ++;
 461                 }
 462                 else if ((*aptr == 32) && (nbsp == 1)) {
 463                         memcpy(bptr, "&nbsp;", 6);
 464                         bptr += 6;
 465                 }
 466                 else if ((*aptr == '\n') && (nolinebreaks)) {
 467                         *bptr='\0';     /* nothing */
 468                 }
 469                 else if ((*aptr == '\r') && (nolinebreaks)) {
 470                         *bptr='\0';     /* nothing */
 471                 }
 472                 else{
 473                         *bptr = *aptr;
 474                         bptr++;
 475                 }
 476                 aptr ++;
 477         }
 478         *bptr = '\0';
 479         if ((bptr = eptr - 1 ) && !IsEmptyStr(aptr) )
 480                 return -1;
 481         return (bptr - target);
 482 }
 483
 484 void escputs1(char *strbuf, int nbsp, int nolinebreaks)
 485 {
 486         char *buf;
 487         long Siz;
 488
 489         if (strbuf == NULL) return;
 490         Siz = (3 * strlen(strbuf)) + SIZ ;
 491         buf = malloc(Siz);
 492         stresc(buf, Siz, strbuf, nbsp, nolinebreaks);
 493         wprintf("%s", buf);
 494         free(buf);
 495 }
 496
 497 /*
 498  * static wrapper for ecsputs1
 499  */
 500 void escputs(char *strbuf)
 501 {
 502         escputs1(strbuf, 0, 0);
 503 }
 504
 505
 506 /*
 507  * urlescape buffer and print it to the client
 508  */
 509 void urlescputs(char *strbuf)
 510 {
 511         char outbuf[SIZ];
 512
 513         urlesc(outbuf, SIZ, strbuf);
 514         wprintf("%s", outbuf);
 515 }
 516
 517
 518 /*
 519  * Copy a string, escaping characters for JavaScript strings.
 520  */
 521 void jsesc(char *target, size_t tlen, char *strbuf)
 522 {
 523         int len;
 524         char *tend;
 525         char *send;
 526         char *tptr;
 527         char *sptr;
 528
 529         target[0]='\0';
 530         len = strlen (strbuf);
 531         send = strbuf + len;
 532         tend = target + tlen;
 533         sptr = strbuf;
 534         tptr = target;
 535
 536         while (!IsEmptyStr(sptr) &&
 537                (sptr < send) &&
 538                (tptr < tend)) {
 539
 540                 if (*sptr == '<')
 541                         *tptr = '[';
 542                 else if (*sptr == '>')
 543                         *tptr = ']';
 544                 else if (*sptr == '\'') {
 545                         if (tend - tptr < 3)
 546                                 return;
 547                         *(tptr++) = '\\';
 548                         *tptr = '\'';
 549                 }
 550                 else if (*sptr == '"') {
 551                         if (tend - tptr < 8)
 552                                 return;
 553                         *(tptr++) = '&';
 554                         *(tptr++) = 'q';
 555                         *(tptr++) = 'u';
 556                         *(tptr++) = 'o';
 557                         *(tptr++) = 't';
 558                         *tptr = ';';
 559                 }
 560                 else if (*sptr == '&') {
 561                         if (tend - tptr < 7)
 562                                 return;
 563                         *(tptr++) = '&';
 564                         *(tptr++) = 'a';
 565                         *(tptr++) = 'm';
 566                         *(tptr++) = 'p';
 567                         *tptr = ';';
 568                 } else {
 569                         *tptr = *sptr;
 570                 }
 571                 tptr++; sptr++;
 572         }
 573         *tptr = '\0';
 574 }
 575
 576 /*
 577  * escape and print javascript
 578  */
 579 void jsescputs(char *strbuf)
 580 {
 581         char outbuf[SIZ];
 582
 583         jsesc(outbuf, SIZ, strbuf);
 584         wprintf("%s", outbuf);
 585 }
 586
 587 /*
 588  * Copy a string, escaping characters for message text hold
 589  */
 590 void msgesc(char *target, size_t tlen, char *strbuf)
 591 {
 592         int len;
 593         char *tend;
 594         char *send;
 595         char *tptr;
 596         char *sptr;
 597
 598         target[0]='\0';
 599         len = strlen (strbuf);
 600         send = strbuf + len;
 601         tend = target + tlen;
 602         sptr = strbuf;
 603         tptr = target;
 604
 605         while (!IsEmptyStr(sptr) &&
 606                (sptr < send) &&
 607                (tptr < tend)) {
 608
 609                 if (*sptr == '\n')
 610                         *tptr = ' ';
 611                 else if (*sptr == '\r')
 612                         *tptr = ' ';
 613                 else if (*sptr == '\'') {
 614                         if (tend - tptr < 8)
 615                                 return;
 616                         *(tptr++) = '&';
 617                         *(tptr++) = '#';
 618                         *(tptr++) = '3';
 619                         *(tptr++) = '9';
 620                         *tptr = ';';
 621                 } else {
 622                         *tptr = *sptr;
 623                 }
 624                 tptr++; sptr++;
 625         }
 626         *tptr = '\0';
 627 }
 628
 629 /*
 630  * print a string to the client after cleaning it with msgesc() and stresc()
 631  */
 632 void msgescputs1( char *strbuf)
 633 {
 634         char *outbuf;
 635         char *outbuf2;
 636         int buflen;
 637
 638         if (strbuf == NULL) return;
 639         buflen = 3 * strlen(strbuf) + SIZ;
 640         outbuf = malloc( buflen);
 641         outbuf2 = malloc( buflen);
 642         msgesc(outbuf, buflen, strbuf);
 643         stresc(outbuf2, buflen, outbuf, 0, 0);
 644         wprintf("%s", outbuf2);
 645         free(outbuf);
 646         free(outbuf2);
 647 }
 648
 649 /*
 650  * print a string to the client after cleaning it with msgesc()
 651  */
 652 void msgescputs(char *strbuf) {
 653         char *outbuf;
 654         size_t len;
 655
 656         if (strbuf == NULL) return;
 657         len =  (3 * strlen(strbuf)) + SIZ;
 658         outbuf = malloc(len);
 659         msgesc(outbuf, len, strbuf);
 660         wprintf("%s", outbuf);
 661         free(outbuf);
 662 }
 663
 664
 665
 666
 667 /*
 668  * Output HTTP headers and leading HTML for a page
 669  */
 670 void output_headers(    int do_httpheaders,     /* 1 = output HTTP headers                          */
 671                         int do_htmlhead,        /* 1 = output HTML <head> section and <body> opener */
 672
 673                         int do_room_banner,     /* 0=no, 1=yes,
 674                                                  * 2 = I'm going to embed my own, so don't open the
 675                                                  *     <div id="content"> either.
 676                                                  */
 677
 678                         int unset_cookies,      /* 1 = session is terminating, so unset the cookies */
 679                         int suppress_check,     /* 1 = suppress check for instant messages          */
 680                         int cache               /* 1 = allow browser to cache this page             */
 681 ) {
 682         char cookie[1024];
 683         char httpnow[128];
 684
 685         hprintf("HTTP/1.1 200 OK\n");
 686         http_datestring(httpnow, sizeof httpnow, time(NULL));
 687
 688         if (do_httpheaders) {
 689                 hprintf("Content-type: text/html; charset=utf-8\r\n"
 690                         "Server: %s / %s\n"
 691                         "Connection: close\r\n",
 692                         PACKAGE_STRING, serv_info.serv_software
 693                 );
 694         }
 695
 696         if (cache) {
 697                 char httpTomorow[128];
 698
 699                 http_datestring(httpTomorow, sizeof httpTomorow,
 700                                 time(NULL) + 60 * 60 * 24 * 2);
 701
 702                 hprintf("Pragma: public\r\n"
 703                         "Cache-Control: max-age=3600, must-revalidate\r\n"
 704                         "Last-modified: %s\r\n"
 705                         "Expires: %s\r\n",
 706                         httpnow,
 707                         httpTomorow
 708                 );
 709         }
 710         else {
 711                 hprintf("Pragma: no-cache\r\n"
 712                         "Cache-Control: no-store\r\n"
 713                         "Expires: -1\r\n"
 714                 );
 715         }
 716
 717         stuff_to_cookie(cookie, 1024, WC->wc_session, WC->wc_username,
 718                         WC->wc_password, WC->wc_roomname);
 719
 720         if (unset_cookies) {
 721                 hprintf("Set-cookie: webcit=%s; path=/\r\n", unset);
 722         } else {
 723                 hprintf("Set-cookie: webcit=%s; path=/\r\n", cookie);
 724                 if (server_cookie != NULL) {
 725                         hprintf("%s\n", server_cookie);
 726                 }
 727         }
 728
 729         if (do_htmlhead) {
 730                 begin_burst();
 731                 if (!access("static.local/webcit.css", R_OK)) {
 732                         svprintf(HKEY("CSSLOCAL"), WCS_STRING,
 733                            "<link href=\"static.local/webcit.css\" rel=\"stylesheet\" type=\"text/css\">"
 734                         );
 735                 }
 736                 do_template("head");
 737         }
 738
 739         /* ICONBAR */
 740         if (do_htmlhead) {
 741
 742
 743                 /* check for ImportantMessages (these display in a div overlaying the main screen) */
 744                 if (!IsEmptyStr(WC->ImportantMessage)) {
 745                         wprintf("<div id=\"important_message\">\n"
 746                                 "<span class=\"imsg\">");
 747                         escputs(WC->ImportantMessage);
 748                         wprintf("</span><br />\n"
 749                                 "</div>\n"
 750                                 "<script type=\"text/javascript\">\n"
 751                                 "        setTimeout('hide_imsg_popup()', 5000); \n"
 752                                 "</script>\n");
 753                         WC->ImportantMessage[0] = 0;
 754                 }
 755
 756                 if ( (WC->logged_in) && (!unset_cookies) ) {
 757                         wprintf("<div id=\"iconbar\">");
 758                         do_selected_iconbar();
 759                         /** check for instant messages (these display in a new window) */
 760                         page_popup();
 761                         wprintf("</div>");
 762                 }
 763
 764                 if (do_room_banner == 1) {
 765                         wprintf("<div id=\"banner\">\n");
 766                         embed_room_banner(NULL, navbar_default);
 767                         wprintf("</div>\n");
 768                 }
 769         }
 770
 771         if (do_room_banner == 1) {
 772                 wprintf("<div id=\"content\">\n");
 773         }
 774 }
 775
 776
 777 /*
 778  * Generic function to do an HTTP redirect.  Easy and fun.
 779  */
 780 void http_redirect(const char *whichpage) {
 781         hprintf("HTTP/1.1 302 Moved Temporarily\n");
 782         hprintf("Location: %s\r\n", whichpage);
 783         hprintf("URI: %s\r\n", whichpage);
 784         hprintf("Content-type: text/html; charset=utf-8\r\n");
 785         wprintf("<html><body>");
 786         wprintf("Go <a href=\"%s\">here</A>.", whichpage);
 787         wprintf("</body></html>\n");
 788         end_burst();
 789 }
 790
 791
 792
 793 /*
 794  * Output a piece of content to the web browser using conformant HTTP and MIME semantics
 795  */
 796 void http_transmit_thing(const char *content_type,
 797                          int is_static) {
 798
 799         output_headers(0, 0, 0, 0, 0, is_static);
 800
 801         hprintf("Content-type: %s\r\n"
 802                 "Server: %s\r\n"
 803                 "Connection: close\r\n",
 804                 content_type,
 805                 PACKAGE_STRING);
 806
 807         end_burst();
 808 }
 809
 810 /*
 811  * print menu box like used in the floor view or admin interface.
 812  * This function takes pair of strings as va_args,
 813  * Title        Title string of the box
 814  * Class        CSS Class for the box
 815  * nLines       How many string pairs should we print? (URL, UrlText)
 816  * ...          Pairs of URL Strings and their Names
 817  */
 818 void print_menu_box(char* Title, char *Class, int nLines, ...)
 819 {
 820         va_list arg_list;
 821         long i;
 822
 823         svput("BOXTITLE", WCS_STRING, Title);
 824         do_template("beginbox");
 825
 826         wprintf("<ul class=\"%s\">", Class);
 827
 828         va_start(arg_list, nLines);
 829         for (i = 0; i < nLines; ++i)
 830         {
 831                 wprintf("<li><a href=\"%s\">", va_arg(arg_list, char *));
 832                 wprintf((char *) va_arg(arg_list, char *));
 833                 wprintf("</a></li>\n");
 834         }
 835         va_end (arg_list);
 836
 837         wprintf("</a></li>\n");
 838
 839         wprintf("</ul>");
 840
 841         do_template("endbox");
 842 }
 843
 844
 845 /*
 846  * dump out static pages from disk
 847  */
 848 void output_static(char *what)
 849 {
 850         int fd;
 851         struct stat statbuf;
 852         off_t bytes;
 853         off_t count = 0;
 854         const char *content_type;
 855         int len;
 856         const char *Err;
 857
 858         fd = open(what, O_RDONLY);
 859         if (fd <= 0) {
 860                 lprintf(9, "output_static('%s')  -- NOT FOUND --\n", what);
 861                 hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 862                 hprintf("Content-Type: text/plain\r\n");
 863                 wprintf("Cannot open %s: %s\r\n", what, strerror(errno));
 864                 end_burst();
 865         } else {
 866                 len = strlen (what);
 867                 content_type = GuessMimeByFilename(what, len);
 868
 869                 if (fstat(fd, &statbuf) == -1) {
 870                         lprintf(9, "output_static('%s')  -- FSTAT FAILED --\n", what);
 871                         hprintf("HTTP/1.1 404 %s\r\n", strerror(errno));
 872                         hprintf("Content-Type: text/plain\r\n");
 873                         wprintf("Cannot fstat %s: %s\n", what, strerror(errno));
 874                         end_burst();
 875                         return;
 876                 }
 877
 878                 count = 0;
 879                 bytes = statbuf.st_size;
 880
 881                 if (StrBufReadBLOB(WC->WBuf, &fd, 1, bytes, &Err) < 0)
 882                 {
 883                         if (fd > 0) close(fd);
 884                         lprintf(9, "output_static('%s')  -- FREAD FAILED (%s) --\n", what, strerror(errno));
 885                                 hprintf("HTTP/1.1 500 internal server error \r\n");
 886                                 hprintf("Content-Type: text/plain\r\n");
 887                                 end_burst();
 888                                 return;
 889                 }
 890
 891
 892                 close(fd);
 893                 lprintf(9, "output_static('%s')  %s\n", what, content_type);
 894                 http_transmit_thing(content_type, 1);
 895         }
 896         if (yesbstr("force_close_session")) {
 897                 end_webcit_session();
 898         }
 899 }
 900
 901 /*
 902  * When the browser requests an image file from the Citadel server,
 903  * this function is called to transmit it.
 904  */
 905 void output_image()
 906 {
 907         struct wcsession *WCC = WC;
 908         char buf[SIZ];
 909         off_t bytes;
 910         const char *MimeType;
 911
 912         serv_printf("OIMG %s|%s", bstr("name"), bstr("parm"));
 913         serv_getln(buf, sizeof buf);
 914         if (buf[0] == '2') {
 915                 bytes = extract_long(&buf[4], 0);
 916
 917                 /** Read it from the server */
 918
 919                 if (read_server_binary(WCC->WBuf, bytes) > 0) {
 920                         serv_puts("CLOS");
 921                         serv_getln(buf, sizeof buf);
 922
 923                         MimeType = GuessMimeType (ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
 924                         /** Write it to the browser */
 925                         if (!IsEmptyStr(MimeType))
 926                         {
 927                                 http_transmit_thing(MimeType, 0);
 928                                 return;
 929                         }
 930                 }
 931                 /* hm... unknown mimetype? fallback to blank gif */
 932         }
 933
 934
 935         /*
 936          * Instead of an ugly 404, send a 1x1 transparent GIF
 937          * when there's no such image on the server.
 938          */
 939         char blank_gif[SIZ];
 940         snprintf (blank_gif, SIZ, "%s%s", static_dirs[0], "/blank.gif");
 941         output_static(blank_gif);
 942 }
 943
 944 /*
 945  * Extract an embedded photo from a vCard for display on the client
 946  */
 947 void display_vcard_photo_img(void)
 948 {
 949         long msgnum = 0L;
 950         char *vcard;
 951         struct vCard *v;
 952         char *photosrc;
 953         const char *contentType;
 954         struct wcsession *WCC = WC;
 955
 956         msgnum = StrTol(WCC->UrlFragment1);
 957
 958         vcard = load_mimepart(msgnum,"1");
 959         v = vcard_load(vcard);
 960
 961         photosrc = vcard_get_prop(v, "PHOTO", 1,0,0);
 962         FlushStrBuf(WCC->WBuf);
 963         StrBufAppendBufPlain(WCC->WBuf, photosrc, -1, 0);
 964         if (StrBufDecodeBase64(WCC->WBuf) <= 0) {
 965                 FlushStrBuf(WCC->WBuf);
 966
 967                 hprintf("HTTP/1.1 500 %s\n","Unable to get photo");
 968                 output_headers(0, 0, 0, 0, 0, 0);
 969                 hprintf("Content-Type: text/plain\r\n");
 970                 wprintf(_("Could Not decode vcard photo\n"));
 971                 end_burst();
 972                 return;
 973         }
 974         contentType = GuessMimeType(ChrPtr(WCC->WBuf), StrLength(WCC->WBuf));
 975         http_transmit_thing(contentType, 0);
 976         free(v);
 977         free(photosrc);
 978 }
 979
 980 /*
 981  * Generic function to output an arbitrary MIME part from an arbitrary
 982  * message number on the server.
 983  *
 984  * msgnum               Number of the item on the citadel server
 985  * partnum              The MIME part to be output
 986  * force_download       Nonzero to force set the Content-Type: header to "application/octet-stream"
 987  */
 988 void mimepart(const char *msgnum, const char *partnum, int force_download)
 989 {
 990         char buf[256];
 991         off_t bytes;
 992         char content_type[256];
 993         char *content = NULL;
 994
 995         serv_printf("OPNA %s|%s", msgnum, partnum);
 996         serv_getln(buf, sizeof buf);
 997         if (buf[0] == '2') {
 998                 bytes = extract_long(&buf[4], 0);
 999                 content = malloc(bytes + 2);
1000                 if (force_download) {
1001                         strcpy(content_type, "application/octet-stream");
1002                 }
1003                 else {
1004                         extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
1005                 }
1006                 output_headers(0, 0, 0, 0, 0, 0);
1007
1008                 read_server_binary(WC->WBuf, bytes);
1009                 serv_puts("CLOS");
1010                 serv_getln(buf, sizeof buf);
1011                 http_transmit_thing(content_type, 0);
1012         } else {
1013                 hprintf("HTTP/1.1 404 %s\n", &buf[4]);
1014                 output_headers(0, 0, 0, 0, 0, 0);
1015                 hprintf("Content-Type: text/plain\r\n");
1016                 wprintf(_("An error occurred while retrieving this part: %s\n"), &buf[4]);
1017                 end_burst();
1018         }
1019
1020 }
1021
1022
1023 /*
1024  * Read any MIME part of a message, from the server, into memory.
1025  */
1026 char *load_mimepart(long msgnum, char *partnum)
1027 {
1028         char buf[SIZ];
1029         off_t bytes;
1030         char content_type[SIZ];
1031         char *content;
1032
1033         serv_printf("DLAT %ld|%s", msgnum, partnum);
1034         serv_getln(buf, sizeof buf);
1035         if (buf[0] == '6') {
1036                 bytes = extract_long(&buf[4], 0);
1037                 extract_token(content_type, &buf[4], 3, '|', sizeof content_type);
1038
1039                 content = malloc(bytes + 2);
1040                 serv_read(content, bytes);
1041
1042                 content[bytes] = 0;     /* null terminate for good measure */
1043                 return(content);
1044         }
1045         else {
1046                 return(NULL);
1047         }
1048
1049 }
1050
1051
1052 /*
1053  * Convenience functions to display a page containing only a string
1054  *
1055  * titlebarcolor        color of the titlebar of the frame
1056  * titlebarmsg          text to display in the title bar
1057  * messagetext          body of the box
1058  */
1059 void convenience_page(char *titlebarcolor, char *titlebarmsg, char *messagetext)
1060 {
1061         hprintf("HTTP/1.1 200 OK\n");
1062         output_headers(1, 1, 2, 0, 0, 0);
1063         wprintf("<div id=\"banner\">\n");
1064         wprintf("<table width=100%% border=0 bgcolor=\"#%s\"><tr><td>", titlebarcolor);
1065         wprintf("<span class=\"titlebar\">%s</span>\n", titlebarmsg);
1066         wprintf("</td></tr></table>\n");
1067         wprintf("</div>\n<div id=\"content\">\n");
1068         escputs(messagetext);
1069
1070         wprintf("<hr />\n");
1071         wDumpContent(1);
1072 }
1073
1074
1075 /*
1076  * Display a blank page.
1077  */
1078 void blank_page(void) {
1079         output_headers(1, 1, 0, 0, 0, 0);
1080         wDumpContent(2);
1081 }
1082
1083
1084 /*
1085  * A template has been requested
1086  */
1087 void url_do_template(void) {
1088         do_template(bstr("template"));
1089 }
1090
1091
1092
1093 /*
1094  * Offer to make any page the user's "start page."
1095  */
1096 void offer_start_page(void) {
1097         wprintf("<a href=\"change_start_page?startpage=");
1098         urlescputs(WC->this_page);
1099         wprintf("\">");
1100         wprintf(_("Make this my start page"));
1101         wprintf("</a>");
1102 #ifdef TECH_PREVIEW
1103         wprintf("<br/><a href=\"rss?room=");
1104         urlescputs(WC->wc_roomname);
1105         wprintf("\" title=\"RSS 2.0 feed for ");
1106         escputs(WC->wc_roomname);
1107         wprintf("\"><img alt=\"RSS\" border=\"0\" src=\"static/xml_button.gif\"/></a>\n");
1108 #endif
1109 }
1110
1111
1112 /*
1113  * Change the user's start page
1114  */
1115 void change_start_page(void) {
1116
1117         if (bstr("startpage") == NULL) {
1118                 safestrncpy(WC->ImportantMessage,
1119                         _("You no longer have a start page selected."),
1120                         sizeof WC->ImportantMessage);
1121                 display_main_menu();
1122                 return;
1123         }
1124
1125         set_preference("startpage", NewStrBufPlain(bstr("startpage"), -1), 1);
1126
1127         output_headers(1, 1, 0, 0, 0, 0);
1128         do_template("newstartpage");
1129         wDumpContent(1);
1130 }
1131
1132
1133
1134 /*
1135  * convenience function to indicate success
1136  */
1137 void display_success(char *successmessage)
1138 {
1139         convenience_page("007700", "OK", successmessage);
1140 }
1141
1142
1143 /*
1144  * Authorization required page
1145  * This is probably temporary and should be revisited
1146  */
1147 void authorization_required(const char *message)
1148 {
1149         hprintf("HTTP/1.1 401 Authorization Required\r\n");
1150         hprintf("WWW-Authenticate: Basic realm=\"%s\"\r\n", serv_info.serv_humannode);
1151         hprintf("Content-Type: text/html\r\n");
1152         wprintf("<h1>");
1153         wprintf(_("Authorization Required"));
1154         wprintf("</h1>\r\n");
1155         wprintf(_("The resource you requested requires a valid username and password. "
1156                 "You could not be logged in: %s\n"), message);
1157         wDumpContent(0);
1158
1159 }
1160
1161 /*
1162  * This function is called by the MIME parser to handle data uploaded by
1163  * the browser.  Form data, uploaded files, and the data from HTTP PUT
1164  * operations (such as those found in GroupDAV) all arrive this way.
1165  *
1166  * name         Name of the item being uploaded
1167  * filename     Filename of the item being uploaded
1168  * partnum      MIME part identifier (not needed)
1169  * disp         MIME content disposition (not needed)
1170  * content      The actual data
1171  * cbtype       MIME content-type
1172  * cbcharset    Character set
1173  * length       Content length
1174  * encoding     MIME encoding type (not needed)
1175  * userdata     Not used here
1176  */
1177 void upload_handler(char *name, char *filename, char *partnum, char *disp,
1178                         void *content, char *cbtype, char *cbcharset,
1179                         size_t length, char *encoding, void *userdata)
1180 {
1181         urlcontent *u;
1182 #ifdef DEBUG_URLSTRINGS
1183         lprintf(9, "upload_handler() name=%s, type=%s, len=%d\n", name, cbtype, length);
1184 #endif
1185         if (WC->urlstrings == NULL)
1186                 WC->urlstrings = NewHash(1, NULL);
1187
1188         /* Form fields */
1189         if ( (length > 0) && (IsEmptyStr(cbtype)) ) {
1190                 u = (urlcontent *) malloc(sizeof(urlcontent));
1191
1192                 safestrncpy(u->url_key, name, sizeof(u->url_key));
1193                 u->url_data = NewStrBufPlain(content, length);
1194
1195                 Put(WC->urlstrings, u->url_key, strlen(u->url_key), u, free_url);
1196 #ifdef DEBUG_URLSTRINGS
1197                 lprintf(9, "Key: <%s> len: [%ld] Data: <%s>\n", u->url_key, u->url_data_size, u->url_data);
1198 #endif
1199         }
1200
1201         /** Uploaded files */
1202         if ( (length > 0) && (!IsEmptyStr(cbtype)) ) {
1203                 WC->upload = malloc(length);
1204                 if (WC->upload != NULL) {
1205                         WC->upload_length = length;
1206                         safestrncpy(WC->upload_filename, filename,
1207                                         sizeof(WC->upload_filename));
1208                         safestrncpy(WC->upload_content_type, cbtype,
1209                                         sizeof(WC->upload_content_type));
1210                         memcpy(WC->upload, content, length);
1211                 }
1212                 else {
1213                         lprintf(3, "malloc() failed: %s\n", strerror(errno));
1214                 }
1215         }
1216
1217 }
1218
1219 /*
1220  * Convenience functions to wrap around asynchronous ajax responses
1221  */
1222 void begin_ajax_response(void) {
1223         output_headers(0, 0, 0, 0, 0, 0);
1224
1225         hprintf("Content-type: text/html; charset=UTF-8\r\n"
1226                 "Server: %s\r\n"
1227                 "Connection: close\r\n"
1228                 "Pragma: no-cache\r\n"
1229                 "Cache-Control: no-cache\r\n"
1230                 "Expires: -1\r\n"
1231                 ,
1232                 PACKAGE_STRING);
1233         begin_burst();
1234 }
1235
1236 /*
1237  * print ajax response footer
1238  */
1239 void end_ajax_response(void) {
1240         ///hprintf("\r\n");///// todo: is this right?
1241         wDumpContent(0);
1242 }
1243
1244 /*
1245  * Wraps a Citadel server command in an AJAX transaction.
1246  */
1247 void ajax_servcmd(void)
1248 {
1249         char buf[1024];
1250         char gcontent[1024];
1251         char *junk;
1252         size_t len;
1253
1254         begin_ajax_response();
1255
1256         serv_printf("%s", bstr("g_cmd"));
1257         serv_getln(buf, sizeof buf);
1258         wprintf("%s\n", buf);
1259
1260         if (buf[0] == '8') {
1261                 serv_printf("\n\n000");
1262         }
1263         if ((buf[0] == '1') || (buf[0] == '8')) {
1264                 while (serv_getln(gcontent, sizeof gcontent), strcmp(gcontent, "000")) {
1265                         wprintf("%s\n", gcontent);
1266                 }
1267                 wprintf("000");
1268         }
1269         if (buf[0] == '4') {
1270                 text_to_server(bstr("g_input"));
1271                 serv_puts("000");
1272         }
1273         if (buf[0] == '6') {
1274                 len = atol(&buf[4]);
1275                 junk = malloc(len);
1276                 serv_read(junk, len);
1277                 free(junk);
1278         }
1279         if (buf[0] == '7') {
1280                 len = atol(&buf[4]);
1281                 junk = malloc(len);
1282                 memset(junk, 0, len);
1283                 serv_write(junk, len);
1284                 free(junk);
1285         }
1286
1287         end_ajax_response();
1288
1289         /*
1290          * This is kind of an ugly hack, but this is the only place it can go.
1291          * If the command was GEXP, then the instant messenger window must be
1292          * running, so reset the "last_pager_check" watchdog timer so
1293          * that page_popup() doesn't try to open it a second time.
1294          */
1295         if (!strncasecmp(bstr("g_cmd"), "GEXP", 4)) {
1296                 WC->last_pager_check = time(NULL);
1297         }
1298 }
1299
1300
1301 /*
1302  * Helper function for the asynchronous check to see if we need
1303  * to open the instant messenger window.
1304  */
1305 void seconds_since_last_gexp(void)
1306 {
1307         char buf[256];
1308
1309         begin_ajax_response();
1310         if ( (time(NULL) - WC->last_pager_check) < 30) {
1311                 wprintf("NO\n");
1312         }
1313         else {
1314                 serv_puts("NOOP");
1315                 serv_getln(buf, sizeof buf);
1316                 if (buf[3] == '*') {
1317                         wprintf("YES");
1318                 }
1319                 else {
1320                         wprintf("NO");
1321                 }
1322         }
1323         end_ajax_response();
1324 }
1325
1326 /**
1327  * \brief Detects a 'mobile' user agent
1328  */
1329 int is_mobile_ua(char *user_agent) {
1330       if (strstr(user_agent,"iPhone OS") != NULL) {
1331         return 1;
1332       } else if (strstr(user_agent,"Windows CE") != NULL) {
1333         return 1;
1334       } else if (strstr(user_agent,"SymbianOS") != NULL) {
1335         return 1;
1336       } else if (strstr(user_agent, "Opera Mobi") != NULL) {
1337         return 1;
1338       } else if (strstr(user_agent, "Firefox/2.0.0 Opera 9.51 Beta") != NULL) {
1339                  // For some reason a new install of Opera 9.51beta decided to spoof.
1340           return 1;
1341           }
1342       return 0;
1343 }
1344
1345
1346 /*
1347  * Entry point for WebCit transaction
1348  */
1349 void session_loop(struct httprequest *req)
1350 {
1351         char cmd[1024];
1352         char action[1024];
1353         char arg[8][128];
1354         size_t sizes[10];
1355         char *index[10];
1356         char buf[SIZ];
1357         char request_method[128];
1358         char pathname[1024];
1359         int a, b, nBackDots, nEmpty;
1360         int ContentLength = 0;
1361         char ContentType[512];
1362         char *content = NULL;
1363         char *content_end = NULL;
1364         struct httprequest *hptr;
1365         char browser_host[256];
1366         char user_agent[256];
1367         int body_start = 0;
1368         int is_static = 0;
1369         int n_static = 0;
1370         int len = 0;
1371         /*
1372          * We stuff these with the values coming from the client cookies,
1373          * so we can use them to reconnect a timed out session if we have to.
1374          */
1375         char c_username[SIZ];
1376         char c_password[SIZ];
1377         char c_roomname[SIZ];
1378         char c_httpauth_string[SIZ];
1379         char c_httpauth_user[SIZ];
1380         char c_httpauth_pass[SIZ];
1381         char cookie[SIZ];
1382         struct wcsession *WCC;
1383
1384         safestrncpy(c_username, "", sizeof c_username);
1385         safestrncpy(c_password, "", sizeof c_password);
1386         safestrncpy(c_roomname, "", sizeof c_roomname);
1387         safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string);
1388         safestrncpy(c_httpauth_user, DEFAULT_HTTPAUTH_USER, sizeof c_httpauth_user);
1389         safestrncpy(c_httpauth_pass, DEFAULT_HTTPAUTH_PASS, sizeof c_httpauth_pass);
1390         strcpy(browser_host, "");
1391
1392         WCC= WC;
1393         if (WCC->WBuf == NULL)
1394                 WC->WBuf = NewStrBufPlain(NULL, 32768);
1395         FlushStrBuf(WCC->WBuf);
1396
1397         if (WCC->HBuf == NULL)
1398                 WCC->HBuf = NewStrBuf();
1399         FlushStrBuf(WCC->HBuf);
1400
1401         WCC->upload_length = 0;
1402         WCC->upload = NULL;
1403         WCC->is_mobile = 0;
1404
1405         hptr = req;
1406         if (hptr == NULL) return;
1407
1408         safestrncpy(cmd, hptr->line, sizeof cmd);
1409         hptr = hptr->next;
1410         extract_token(request_method, cmd, 0, ' ', sizeof request_method);
1411         extract_token(pathname, cmd, 1, ' ', sizeof pathname);
1412
1413         /** Figure out the action */
1414         index[0] = action;
1415         sizes[0] = sizeof action;
1416         for (a=1; a<9; a++)
1417         {
1418                 index[a] = arg[a-1];
1419                 sizes[a] = sizeof arg[a-1];
1420         }
1421 ////    index[9] = &foo; todo
1422         nBackDots = 0;
1423         nEmpty = 0;
1424         for ( a = 0; a < 9; ++a)
1425         {
1426                 extract_token(index[a], pathname, a + 1, '/', sizes[a]);
1427                 if (strstr(index[a], "?")) *strstr(index[a], "?") = 0;
1428                 if (strstr(index[a], "&")) *strstr(index[a], "&") = 0;
1429                 if (strstr(index[a], " ")) *strstr(index[a], " ") = 0;
1430                 if ((index[a][0] == '.') && (index[a][1] == '.'))
1431                         nBackDots++;
1432                 if (index[a][0] == '\0')
1433                         nEmpty++;
1434         }
1435
1436         while (hptr != NULL) {
1437                 safestrncpy(buf, hptr->line, sizeof buf);
1438                 /* lprintf(9, "HTTP HEADER: %s\n", buf); */
1439                 hptr = hptr->next;
1440
1441                 if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
1442                         safestrncpy(cookie, &buf[15], sizeof cookie);
1443                         cookie_to_stuff(cookie, NULL,
1444                                         c_username, sizeof c_username,
1445                                         c_password, sizeof c_password,
1446                                         c_roomname, sizeof c_roomname);
1447                 }
1448                 else if (!strncasecmp(buf, "Authorization: Basic ", 21)) {
1449                         CtdlDecodeBase64(c_httpauth_string, &buf[21], strlen(&buf[21]));
1450                         extract_token(c_httpauth_user, c_httpauth_string, 0, ':', sizeof c_httpauth_user);
1451                         extract_token(c_httpauth_pass, c_httpauth_string, 1, ':', sizeof c_httpauth_pass);
1452                 }
1453                 else if (!strncasecmp(buf, "Content-length: ", 16)) {
1454                         ContentLength = atoi(&buf[16]);
1455                 }
1456                 else if (!strncasecmp(buf, "Content-type: ", 14)) {
1457                         safestrncpy(ContentType, &buf[14], sizeof ContentType);
1458                 }
1459                 else if (!strncasecmp(buf, "User-agent: ", 12)) {
1460                         safestrncpy(user_agent, &buf[12], sizeof user_agent);
1461                         #ifdef TECH_PREVIEW
1462                         if (is_mobile_ua(&buf[12])) {
1463                                 WCC->is_mobile = 1;
1464                         }
1465                         #endif
1466                 }
1467                 else if (!strncasecmp(buf, "X-Forwarded-Host: ", 18)) {
1468                         if (follow_xff) {
1469                                 safestrncpy(WCC->http_host, &buf[18], sizeof WCC->http_host);
1470                         }
1471                 }
1472                 else if (!strncasecmp(buf, "Host: ", 6)) {
1473                         if (IsEmptyStr(WCC->http_host)) {
1474                                 safestrncpy(WCC->http_host, &buf[6], sizeof WCC->http_host);
1475                         }
1476                 }
1477                 else if (!strncasecmp(buf, "X-Forwarded-For: ", 17)) {
1478                         safestrncpy(browser_host, &buf[17], sizeof browser_host);
1479                         while (num_tokens(browser_host, ',') > 1) {
1480                                 remove_token(browser_host, 0, ',');
1481                         }
1482                         striplt(browser_host);
1483                 }
1484         }
1485
1486         if (ContentLength > 0) {
1487                 int BuffSize;
1488
1489                 BuffSize = ContentLength + SIZ;
1490                 content = malloc(BuffSize);
1491                 memset(content, 0, BuffSize);
1492                 snprintf(content,  BuffSize, "Content-type: %s\n"
1493                                 "Content-length: %d\n\n",
1494                                 ContentType, ContentLength);
1495                 body_start = strlen(content);
1496
1497                 /** Read the entire input data at once. */
1498                 client_read(WCC->http_sock, &content[body_start], ContentLength);
1499
1500                 if (!strncasecmp(ContentType, "application/x-www-form-urlencoded", 33)) {
1501                         StrBuf *Content;
1502
1503                         Content = _NewConstStrBuf(&content[body_start],ContentLength);
1504                         addurls(Content);
1505                         FreeStrBuf(&Content);
1506                 } else if (!strncasecmp(ContentType, "multipart", 9)) {
1507                         content_end = content + ContentLength + body_start;
1508                         mime_parser(content, content_end, *upload_handler, NULL, NULL, NULL, 0);
1509                 }
1510         } else {
1511                 content = NULL;
1512         }
1513
1514         /* make a note of where we are in case the user wants to save it */
1515         safestrncpy(WCC->this_page, cmd, sizeof(WCC->this_page));
1516         remove_token(WCC->this_page, 2, ' ');
1517         remove_token(WCC->this_page, 0, ' ');
1518
1519         /* If there are variables in the URL, we must grab them now */
1520         len = strlen(cmd);
1521         for (a = 0; a < len; ++a) {
1522                 if ((cmd[a] == '?') || (cmd[a] == '&')) {
1523                         StrBuf *Params;
1524                         for (b = a; b < len; ++b) {
1525                                 if (isspace(cmd[b])){
1526                                         cmd[b] = 0;
1527                                         len = b - 1;
1528                                 }
1529                         }
1530                         //cmd[len - a] = '\0';
1531                         Params = _NewConstStrBuf(&cmd[a + 1], len - a);
1532                         addurls(Params);
1533                         cmd[a] = 0;
1534                         len = a - 1;
1535                 }
1536         }
1537
1538         /* If it's a "force 404" situation then display the error and bail. */
1539         if (!strcmp(action, "404")) {
1540                 hprintf("HTTP/1.1 404 Not found\r\n");
1541                 hprintf("Content-Type: text/plain\r\n");
1542                 wprintf("Not found\r\n");
1543                 end_burst();
1544                 goto SKIP_ALL_THIS_CRAP;
1545         }
1546
1547         /* Static content can be sent without connecting to Citadel. */
1548         is_static = 0;
1549         for (a=0; a<ndirs; ++a) {
1550                 if (!strcasecmp(action, (char*)static_content_dirs[a])) { /* map web to disk location */
1551                         is_static = 1;
1552                         n_static = a;
1553                 }
1554         }
1555         if (is_static) {
1556                 if (nBackDots < 2)
1557                 {
1558                         snprintf(buf, sizeof buf, "%s/%s/%s/%s/%s/%s/%s/%s",
1559                                  static_dirs[n_static],
1560                                  index[1], index[2], index[3], index[4], index[5], index[6], index[7]);
1561                         for (a=0; a<8; ++a) {
1562                                 if (buf[strlen(buf)-1] == '/') {
1563                                         buf[strlen(buf)-1] = 0;
1564                                 }
1565                         }
1566                         for (a = 0; a < strlen(buf); ++a) {
1567                                 if (isspace(buf[a])) {
1568                                         buf[a] = 0;
1569                                 }
1570                         }
1571                         output_static(buf);
1572                 }
1573                 else
1574                 {
1575                         lprintf(9, "Suspicious request. Ignoring.");
1576                         hprintf("HTTP/1.1 404 Security check failed\r\n");
1577                         hprintf("Content-Type: text/plain\r\n");
1578                         wprintf("You have sent a malformed or invalid request.\r\n");
1579                         end_burst();
1580                 }
1581                 goto SKIP_ALL_THIS_CRAP;        /* Don't try to connect */
1582         }
1583
1584         /* If the client sent a nonce that is incorrect, kill the request. */
1585         if (strlen(bstr("nonce")) > 0) {
1586                 lprintf(9, "Comparing supplied nonce %s to session nonce %ld\n",
1587                         bstr("nonce"), WCC->nonce);
1588                 if (ibstr("nonce") != WCC->nonce) {
1589                         lprintf(9, "Ignoring request with mismatched nonce.\n");
1590                         hprintf("HTTP/1.1 404 Security check failed\r\n");
1591                         hprintf("Content-Type: text/plain\r\n");
1592                         wprintf("Security check failed.\r\n");
1593                         end_burst();
1594                         goto SKIP_ALL_THIS_CRAP;
1595                 }
1596         }
1597
1598         /*
1599          * If we're not connected to a Citadel server, try to hook up the
1600          * connection now.
1601          */
1602         if (!WCC->connected) {
1603                 if (!strcasecmp(ctdlhost, "uds")) {
1604                         /* unix domain socket */
1605                         snprintf(buf, SIZ, "%s/citadel.socket", ctdlport);
1606                         WCC->serv_sock = uds_connectsock(buf);
1607                 }
1608                 else {
1609                         /* tcp socket */
1610                         WCC->serv_sock = tcp_connectsock(ctdlhost, ctdlport);
1611                 }
1612
1613                 if (WCC->serv_sock < 0) {
1614                         do_logout();
1615                         goto SKIP_ALL_THIS_CRAP;
1616                 }
1617                 else {
1618                         WCC->connected = 1;
1619                         serv_getln(buf, sizeof buf);    /** get the server welcome message */
1620
1621                         /**
1622                          * From what host is our user connecting?  Go with
1623                          * the host at the other end of the HTTP socket,
1624                          * unless we are following X-Forwarded-For: headers
1625                          * and such a header has already turned up something.
1626                          */
1627                         if ( (!follow_xff) || (strlen(browser_host) == 0) ) {
1628                                 locate_host(browser_host, WCC->http_sock);
1629                         }
1630
1631                         get_serv_info(browser_host, user_agent);
1632                         if (serv_info.serv_rev_level < MINIMUM_CIT_VERSION) {
1633                                 wprintf(_("You are connected to a Citadel "
1634                                         "server running Citadel %d.%02d. \n"
1635                                         "In order to run this version of WebCit "
1636                                         "you must also have Citadel %d.%02d or"
1637                                         " newer.\n\n\n"),
1638                                                 serv_info.serv_rev_level / 100,
1639                                                 serv_info.serv_rev_level % 100,
1640                                                 MINIMUM_CIT_VERSION / 100,
1641                                                 MINIMUM_CIT_VERSION % 100
1642                                         );
1643                                 end_webcit_session();
1644                                 goto SKIP_ALL_THIS_CRAP;
1645                         }
1646                 }
1647         }
1648 ////////todo: restorte language in this case
1649         /*
1650          * Functions which can be performed without logging in
1651          */
1652         if (!strcasecmp(action, "listsub")) {
1653                 do_listsub();
1654                 goto SKIP_ALL_THIS_CRAP;
1655         }
1656         if (!strcasecmp(action, "freebusy")) {
1657                 do_freebusy(cmd);
1658                 goto SKIP_ALL_THIS_CRAP;
1659         }
1660
1661         /*
1662          * If we're not logged in, but we have HTTP Authentication data,
1663          * try logging in to Citadel using that.
1664          */
1665         if ((!WCC->logged_in)
1666            && (strlen(c_httpauth_user) > 0)
1667            && (strlen(c_httpauth_pass) > 0)) {
1668                 serv_printf("USER %s", c_httpauth_user);
1669                 serv_getln(buf, sizeof buf);
1670                 if (buf[0] == '3') {
1671                         serv_printf("PASS %s", c_httpauth_pass);
1672                         serv_getln(buf, sizeof buf);
1673                         if (buf[0] == '2') {
1674                                 become_logged_in(c_httpauth_user,
1675                                                 c_httpauth_pass, buf);
1676                                 safestrncpy(WCC->httpauth_user, c_httpauth_user, sizeof WCC->httpauth_user);
1677                                 safestrncpy(WCC->httpauth_pass, c_httpauth_pass, sizeof WCC->httpauth_pass);
1678                         } else {
1679                                 /* Should only display when password is wrong */
1680                                 authorization_required(&buf[4]);
1681                                 goto SKIP_ALL_THIS_CRAP;
1682                         }
1683                 }
1684         }
1685
1686         /* This needs to run early */
1687 #ifdef TECH_PREVIEW
1688         if (!strcasecmp(action, "rss")) {
1689                 display_rss(bstr("room"), request_method);
1690                 goto SKIP_ALL_THIS_CRAP;
1691         }
1692 #endif
1693
1694         /*
1695          * The GroupDAV stuff relies on HTTP authentication instead of
1696          * our session's authentication.
1697          */
1698         if (!strncasecmp(action, "groupdav", 8)) {
1699                 groupdav_main(req, ContentType, /* do GroupDAV methods */
1700                         ContentLength, content+body_start);
1701                 if (!WCC->logged_in) {
1702                         WCC->killthis = 1;      /* If not logged in, don't */
1703                 }                               /* keep the session active */
1704                 goto SKIP_ALL_THIS_CRAP;
1705         }
1706
1707
1708         /*
1709          * Automatically send requests with any method other than GET or
1710          * POST to the GroupDAV code as well.
1711          */
1712         if ((strcasecmp(request_method, "GET")) && (strcasecmp(request_method, "POST"))) {
1713                 groupdav_main(req, ContentType, /** do GroupDAV methods */
1714                         ContentLength, content+body_start);
1715                 if (!WCC->logged_in) {
1716                         WCC->killthis = 1;      /** If not logged in, don't */
1717                 }                               /** keep the session active */
1718                 goto SKIP_ALL_THIS_CRAP;
1719         }
1720
1721         /*
1722          * If we're not logged in, but we have username and password cookies
1723          * supplied by the browser, try using them to log in.
1724          */
1725         if ((!WCC->logged_in)
1726            && (!IsEmptyStr(c_username))
1727            && (!IsEmptyStr(c_password))) {
1728                 serv_printf("USER %s", c_username);
1729                 serv_getln(buf, sizeof buf);
1730                 if (buf[0] == '3') {
1731                         serv_printf("PASS %s", c_password);
1732                         serv_getln(buf, sizeof buf);
1733                         if (buf[0] == '2') {
1734                                 StrBuf *Lang;
1735                                 become_logged_in(c_username, c_password, buf);
1736                                 if (get_preference("language", &Lang)) {
1737                                         set_selected_language(ChrPtr(Lang));
1738                                         go_selected_language();         /* set locale */
1739                                 }
1740                         }
1741                 }
1742         }
1743         /*
1744          * If we don't have a current room, but a cookie specifying the
1745          * current room is supplied, make an effort to go there.
1746          */
1747         if ((IsEmptyStr(WCC->wc_roomname)) && (!IsEmptyStr(c_roomname))) {
1748                 serv_printf("GOTO %s", c_roomname);
1749                 serv_getln(buf, sizeof buf);
1750                 if (buf[0] == '2') {
1751                         safestrncpy(WCC->wc_roomname, c_roomname, sizeof WCC->wc_roomname);
1752                 }
1753         }
1754
1755         if (!strcasecmp(action, "image")) {
1756                 output_image();
1757         } else if (!strcasecmp(action, "display_mime_icon")) {
1758                 display_mime_icon();
1759         }
1760         else {
1761                 void *vHandler;
1762                 WebcitHandler *Handler;
1763
1764                 GetHash(HandlerHash, action, strlen(action) /* TODO*/, &vHandler),
1765                         Handler = (WebcitHandler*) vHandler;
1766                 if (Handler != NULL) {
1767                         if (!WCC->logged_in && ((Handler->Flags & ANONYMOUS) == 0)) {
1768                                 display_login(NULL);
1769                         }
1770                         else {
1771                                 if((Handler->Flags & NEED_URL)) {
1772                                         if (WCC->UrlFragment1 == NULL)
1773                                                 WCC->UrlFragment1 = NewStrBuf();
1774                                         if (WCC->UrlFragment2 == NULL)
1775                                                 WCC->UrlFragment2 = NewStrBuf();
1776                                         StrBufPrintf(WCC->UrlFragment1, "%s", index[1]);
1777                                         StrBufPrintf(WCC->UrlFragment2, "%s", index[2]);
1778                                 }
1779                                 if ((Handler->Flags & AJAX) != 0)
1780                                         begin_ajax_response();
1781                                 Handler->F();
1782                                 if ((Handler->Flags & AJAX) != 0)
1783                                         end_ajax_response();
1784                         }
1785                 }
1786         /* When all else fais, display the main menu. */
1787         else {
1788                 if (!WCC->logged_in)
1789                         display_login(NULL);
1790                 else
1791                         display_main_menu();
1792         }
1793 }
1794 SKIP_ALL_THIS_CRAP:
1795         fflush(stdout);
1796         if (content != NULL) {
1797                 free(content);
1798                 content = NULL;
1799         }
1800         free_urls();
1801         if (WCC->upload_length > 0) {
1802                 free(WCC->upload);
1803                 WCC->upload_length = 0;
1804         }
1805 }
1806
1807
1808 /*
1809  * Replacement for sleep() that uses select() in order to avoid SIGALRM
1810  */
1811 void sleeeeeeeeeep(int seconds)
1812 {
1813         struct timeval tv;
1814
1815         tv.tv_sec = seconds;
1816         tv.tv_usec = 0;
1817         select(0, NULL, NULL, NULL, &tv);
1818 }
1819
1820 void diagnostics(void)
1821 {
1822         output_headers(1, 1, 1, 0, 0, 0);
1823         wprintf("Session: %d<hr />\n", WC->wc_session);
1824         wprintf("Command: <br /><PRE>\n");
1825         escputs(WC->UrlFragment1);
1826         wprintf("<br />\n");
1827         escputs(WC->UrlFragment2);
1828         wprintf("</PRE><hr />\n");
1829         wprintf("Variables: <br /><PRE>\n");
1830         dump_vars();
1831         wprintf("</PRE><hr />\n");
1832         wDumpContent(1);
1833 }
1834
1835 void view_mimepart(void) {
1836         mimepart(ChrPtr(WC->UrlFragment1),
1837                  ChrPtr(WC->UrlFragment2),
1838                  0);
1839 }
1840
1841 void download_mimepart(void) {
1842         mimepart(ChrPtr(WC->UrlFragment1),
1843                  ChrPtr(WC->UrlFragment2),
1844                  1);
1845 }
1846
1847 void
1848 InitModule_WEBCIT
1849 (void)
1850 {
1851         WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS);
1852         WebcitAddUrlHandler(HKEY("do_template"), url_do_template, ANONYMOUS);
1853         WebcitAddUrlHandler(HKEY("sslg"), seconds_since_last_gexp, AJAX);
1854         WebcitAddUrlHandler(HKEY("ajax_servcmd"), ajax_servcmd, 0);
1855         WebcitAddUrlHandler(HKEY("change_start_page"), change_start_page, 0);
1856         WebcitAddUrlHandler(HKEY("toggle_self_service"), toggle_self_service, 0);
1857         WebcitAddUrlHandler(HKEY("vcardphoto"), display_vcard_photo_img, NEED_URL);
1858         WebcitAddUrlHandler(HKEY("mimepart"), view_mimepart, NEED_URL);
1859         WebcitAddUrlHandler(HKEY("mimepart_download"), download_mimepart, NEED_URL);
1860         WebcitAddUrlHandler(HKEY("diagnostics"), diagnostics, NEED_URL);
1861 }